CN100334773C - Battery device - Google Patents

Battery device Download PDF

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Publication number
CN100334773C
CN100334773C CNB988001888A CN98800188A CN100334773C CN 100334773 C CN100334773 C CN 100334773C CN B988001888 A CNB988001888 A CN B988001888A CN 98800188 A CN98800188 A CN 98800188A CN 100334773 C CN100334773 C CN 100334773C
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CN
China
Prior art keywords
connector
circuit board
lithium ion
battery
partial cut
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNB988001888A
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Chinese (zh)
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CN1217825A (en
Inventor
菅井健二
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rohm Co Ltd
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Rohm Co Ltd
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Filing date
Publication date
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Publication of CN1217825A publication Critical patent/CN1217825A/en
Application granted granted Critical
Publication of CN100334773C publication Critical patent/CN100334773C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0468—Compression means for stacks of electrodes and separators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/50—Methods or arrangements for servicing or maintenance, e.g. for maintaining operating temperature
    • H01M6/5044—Cells or batteries structurally combined with cell condition indicating means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Abstract

A battery device includes a lithium ion battery in a flattened cylindrical form and a circuit board arranged on a side surface of the battery. A first connection member connects between the circuit board and a positive pole, while a second connection member connects between the circuit board and a negative pole. The first connection member and the second connection member are both of strip members. The strip member is formed is a plurality of partial cuts extending from a lateral end of the strip member in a width direction. When there is a variation in the connection length between the circuit board and the positive/negative pole, the plurality of the partial cuts are opened or closed to thereby absorb the variation of the connection length by the first connection member and the second connection member.

Description

Battery apparatus
Technical field
The present invention relates to battery apparatus.Specifically, the present invention relates to a kind of battery apparatus with lithium ion battery and a protective circuit plate.
Background technology
Owing to comprise the minimizing of electronic equipment aspect volume and weight of mobile phone, press for and reduce volume of battery and weight.In order to satisfy this demand, developed a kind of rechargeable battery (following being called " lithium ion battery "), its uses and can mix and/or can remove the lithium that mixed or the material as cathode of lithium ion.This output voltage is high in light weight and have the lithium ion battery that suppresses the self discharging performance and entered actual use.
Yet such rechargeable battery has a feature, and promptly in charging and discharge process, its electrode part will stand expansion and contraction repeatedly.In this case, existing various considerations are so that solve the technical problem that expansion and contraction owing to electrode material produce.
For example, at disclosed Japanese patent application publication No. H7-134984[H01M4/02 on May 23rd, 1996,4/58,10/40] there is a kind of imagination the lining, wherein, constitute a columniform rechargeable battery by a helical electrode body, like this, even reach at utmost in the thermal expansion aspect the electrode material volume, the pressure that acts between positive pole and the negative pole also can be relaxed.Simultaneously, on August 18th, 1996 disclosed Japanese patent application publication No. H7-220754[10/38,10/38] imagination, constitute an electrode body by tying up the duplexer that forms by heat-shrinkable pipe, so that receive volumetric expansion, prevent the duplexer distortion thus because of charging and discharge generation.The prior art in back also comprises a elastic ring between container and lid or the corrugated portion at container itself, thereby makes the inflatable and contraction of electrode body, to keep the shape of duplexer.
Here, the various imaginations that proposed are the mode of the influence of expansion by eliminating electrode body and contraction structures of keeping electrode body.
Simultaneously, above-mentioned lithium ion battery usually has protective circuit, excessively works to prevent battery.Because will reduce the volume and weight of electronic equipment above-mentioned, this protective circuit is directly installed on the battery usually, as shown in Figure 1, so that conserve space.
Fig. 1 has shown a battery apparatus 1 of the prior art, and it comprises a lithium ion battery 12, and this battery has the duplexer (not shown) that is flat column.This lithium ion battery 12 has anodal guide plate 14 that is exposed on the top surface and the negative pole guide plate 16 that is exposed on the basal surface.The circuit board 20 that has a protective circuit 18 is installed into the contacts side surfaces with battery 12.Circuit board 20 has the connecting band 2 and 4 that is electrically connected with protective circuit 18.Connecting band 2 and 4 is that (for example) formed by the nickel thin slice, and is electrically connected with anodal guide plate 14 and negative pole guide plate 16 respectively.
1 li of battery apparatus shown in Figure 1, lithium ion battery 1 will cause the expansion repeatedly and the contraction of duplexer (not shown) as described above when using.Yet, on circuit board 20 and connecting band 2 and 4, do not expand and contraction.As a result, on these parts stress will appear.If this stress on the point that connecting band 2 and 4 is fixed on the circuit board 20, might rupture on the circuit component, such as protective circuit 18 or circuit board 20 on the structural weak part.
In this case, various improvement ways have been attempted, so that gain in strength the above-mentioned stress of antagonism.Yet this traditional improving one's methods comprises the part that the part that uses particular design or rigidity increase, to increase total intensity.But this will produce a problem, promptly influence the minimizing of battery apparatus on volume and weight, and cause manufacturing cost to increase.
Summary of the invention
Therefore, a main purpose of the present invention is that a kind of battery apparatus is provided on the basis that reduces cost, and it has improved the ability of the stress that stands to produce thereon.
Another object of the present invention provides a kind of battery apparatus, and it has improved the ability that stands stress in small size and light weight.
According to a first aspect of the invention, provide a kind of battery apparatus, having comprised: a lithium ion battery, it has by formed positive pole of polymeric material and negative pole, and utilizes lithium ion to charge and discharge; One circuit board is installed on the outer surface of described lithium ion battery; One first connector, it is connected between described circuit board and the described positive pole; One second connector, it is connected between described circuit board and the described negative pole; And by one of them formed strap-like member at least of described first connector and described second connector, described strap-like member has preset width and extends and many partial cut-out of forming from the transverse end broad ways of this strap-like member.
Preferably, described many partial cut-out extend to from a described lateral edges cross central line that surpasses described strap-like member a bit.
Preferably, described many partial cut-out comprise first partial cut-out and second partial cut-out that forms along described Width extension from the transverse end of described strap-like member.
Preferably, described first partial cut-out and described second partial cut-out length direction that is relative described strap-like member alternately forms.
According to a second aspect of the invention, provide a kind of battery apparatus, having comprised: a lithium ion battery, it has by formed positive pole of polymeric material and negative pole, and utilizes lithium ion to charge and discharge; One circuit board is installed on the outer surface of described lithium ion battery; One first connector, it is connected between described circuit board and the described positive pole; One second connector, it is connected between described circuit board and the described negative pole; And by one of them formed strap-like member at least of described first connector and described second connector, described strap-like member has the outwards outstanding and arch section that forms on its whole width.
Preferably, in described first connector and described second connector one of them comprises a sweep at least, bending on it is by forming along the mode that the outer surface of described lithium ion battery extends in the corner of described outer surface, and described arch section just is formed on described bend office.
By below with reference to the accompanying drawing detailed description of the present invention, can more clearly understand above-mentioned purpose of the present invention and other purpose, feature and advantage.
Description of drawings
Fig. 1 is the view that shows a conventional batteries structure;
Fig. 2 is the view that shows according to the battery structure of one embodiment of the invention;
Fig. 3 is the cutaway view along the III-III line among Fig. 2;
Fig. 4 is the cutaway view along the IV-IV line among Fig. 2;
Fig. 5 (A) and (B) be the plane graph that shows an example of the connecting band in embodiment illustrated in fig. 2;
Fig. 6 is the plane graph that shows another example of the connecting band in embodiment illustrated in fig. 2;
Fig. 7 is the plane graph that shows another example of the connecting band in embodiment illustrated in fig. 2;
Fig. 8 is the view that shows according to the battery structure of another embodiment of the present invention;
Fig. 9 is the view that shows the arch section in embodiment illustrated in fig. 8;
Figure 10 is the plane graph that shows another example of the connecting band in embodiment illustrated in fig. 8;
Figure 11 is the block diagram that shows an example of protective circuit.
Embodiment
Fig. 2 has shown the battery apparatus 10 according to one embodiment of the invention.Battery apparatus 10 comprises a lithium ion battery 12 of making according to structure shown in Fig. 3 and 4.Lithium ion battery 12 has and is substantially similar to the described structure of (for example) Japanese patent application publication No. H7-134984 above-mentioned.That is, lithium ion battery 12 has a negative pole 121, anodal 122 and one separator 123, and wherein, negative pole 121 is to form by the both side surface that will offer a banded Copper Foil based on the negative pole compound of carbonaceous material, and anodal 122 is by will be based on LiCoO 2Anodal compound offer that the both side surface of a banded aluminium foil forms, and separator 123 is to be formed by the polypropylene film with aperture.Be wound into to negative pole 121, separator 123 and anodal 122 stacked according to the order of sequence and spiralitys a flat cylindricality.At the top surface of this duplexer one anodal guide plate 14 is installed, at its basal surface one negative pole guide plate 16 is installed, they are connected with negative pole 121 with anodal 122 respectively.This duplexer is sealed fully by a flexible insulating trip 124, has only anodal guide plate 14 and negative pole guide plate 16 to expose.
10 li of the battery apparatus of this embodiment, provide one to have the circuit board 20 of protective circuit 18 and it is contacted with the side surface of duplexer.Fixing the connecting band 22 and 24 that is electrically connected with protective circuit 18 on the circuit board 20.Connecting band 22 and 24 can be formed by nickel thin slice (band), and is electrically connected with anodal guide plate 14 and negative pole guide plate 16 respectively.
In addition, 10 li of the battery apparatus of this embodiment, connecting band 22 and 24 has partial cut-out 221,222,241 and 242.These partial cut-out 221,222,241 and 242 constitute a length variations device, and it allows in the change that connects on the length.Here, connecting length is meant in the length of the connecting band 22 that extends between circuit board 20 and the anodal guide plate 14 or the length of the connecting band 24 that refers to extend between negative pole guide plate 16 and circuit board 20, wherein, connecting band 22 and 24 does not have loosely the profile setting along duplexer or lithium ion battery 12.
Fig. 5 is presented at the plane graph of connecting band 22 parts in this embodiment, wherein should see, the also available similar mode of another connecting band forms.
Shown in Fig. 5 (A), along laterally being formed with many partial cut-out 221 on the direction longitudinally facing to connecting band 22, that is, they are many partial cut-out that broad ways forms.Partial cut-out 221 on the horizontal sides part of connecting band 22 from a lateral edges of connecting band 22 extend to above the center line 22a of connecting band 22 a bit, and extend to a bit from the opposite side edge above the center line 22a of connecting band 22 in the partial cut-out 222 of connecting band 22 horizontal opposite sides on partly.That is, these partial cut-out 221 and 222 alternately from each lateral edges extend to above center line 22a a bit.
If because duplexer (lithium ion battery 12) expands or other reason increases anodal guide plate 14 and the connection length between the circuit board 20 on the battery 12, partial cut- out 221 and 222 will be opened, and make connecting band 22 elongated in the longitudinal direction.That is, partial cut-out 221 will be opened or close up with 222 according to the variation that is connected length.This will allow the length of connecting band 22 to change along its length, thereby receive in the respective change amount that connects on the length.
In this case, by determining above-mentioned otch 221 and 222 is formed at above connecting band 22 center line 22a how long just to determine connecting band 22 length variations in the longitudinal direction.Length variations in the longitudinal direction also can increase by the quantity that increases partial cut- out 221 and 222.
Though partial cut-out 221,222,241 and 242 is provided on each connecting band 22 and 24 in embodiment illustrated in fig. 2, also can only on a connecting band, provides this partial cut-out.
In addition, shown in Fig. 6 and 7, length direction (and Width) diagonally extending that partial cut-out 221 and 222 can relative connecting band 22, or become an arc to extend.That is, partial cut-out 221,222,241 and 242 can Any shape provide, as long as they extend to some place above the center line of connecting band 22 and 24 continuously from each edge.Therefore, also can provide the structure of opening shape, to replace partial cut-out.When using opening, their shape needs only this opening and extends to a bit locating above connecting band 22 and 24 center lines arbitrarily.
In addition, partial cut-out or opening can pass through the processing of punching press again formation at connecting band 22 and 24 formation backs, or form simultaneously at formation connecting band 22 and 24.
Fig. 8 is the view of the battery structure of looking from a side, and it has shown another embodiment of the present invention.In this embodiment, also provide the connecting band 22 that extends along battery 12 or duplexer profile and 24 and they are connected between circuit board 20 and anodal guide plate 14 or the negative pole guide plate 16.Connecting band 22 and 24 is formed with arch section 223 and 243 respectively.Fig. 9 has shown a connecting band 24, and it also can represent another connecting band 22.Connecting band 24 comprises that wherein, arch section 243 is connected between 24a of first and the second portion 24b along the 24a of first of the side surface extension of battery 12 and the second portion 24b that extends along the back side of battery 12.Arch section 243 is to form like this, and promptly the part of connecting band 24 is outstanding to a direction (outwards) on whole width, thereby forms a sweep.
If owing to duplexer expands or other reason makes and is connected length increase, connecting band 22 and 24 pulling force that will stand along its length between circuit board 20 and anodal guide plate 14 or the negative pole guide plate 16 on the battery 12.At this moment, arch section 223 and 243 will stretch along its length, corresponding connect the increase of length and will increase the length of connecting band 22 and 24.
For connecting band 22 and 24 being fixed on the outer surface of battery 12, must make their bendings in the mode of extending along the profile of battery 12.If form the arch section 223 and 243 shown in Fig. 8 and 9 in advance on the sweep of connecting band 22 and 24, that will help connecting band to extend along the outer surface bending of battery 12.
In addition, if the part of reduced width is provided on a part that forms arch section 223 on the connecting band 22 as shown in figure 10, this reduced width part will have the intensity that reduces.Therefore, when a pulling force is applied on the connecting band 22, arch section 223 will be easier to stretch.This passes to minimizing the load of the other parts except the arch section 223 of connecting band 22.In the embodiment shown in fig. 10, though be narrow at the width at arch section 223 places, also can be by reducing the intensity that thickness that connecting band 22 (24) arch sections 223 (243) locate reduce arch section 223 (243).This also can make arch section 223 (243) distortion.
Like this, if form extensible or deformable otch or opening or arch section at least one connecting band 22 and 24, above-mentioned all embodiment can both receive the variation of the connection length between circuit board 20 and anodal guide plate 14 or negative pole guide plate 16.Therefore, can relax because battery 12 (duplexer) expands and shrinks the stress that produces.
By the way, the battery apparatus of making like this 10 has circuit configuration as shown in figure 11.That is, this battery apparatus 10 has the function that the energy of lithium ion battery 12 is sent to a battery powered device (not shown) by a battery terminal.The positive pole of lithium ion battery 12 is connected with circuit board with 24 by connecting band 22 with negative pole.Be formed with protective circuit on the circuit board, this protective circuit 18 comprises control IC (integrated circuit) 18a (such as the BA31153FV that is made by Rohm Co., Ltd) and switch 18b.Control IC 18a monitors the voltage and/or the electric current of lithium ion battery 12.In discharge process, control IC is according to the voltage/current situation, promptly closes swap switch 18b when overcurrent or voltage drop are low to moderate a set-point.Like this, the energy that transmits by battery terminal is cut off.Similarly, in charging process, control IC 18a is according to the voltage/current situation, promptly closes swap switch 18b when overcurrent or voltage are increased to a set-point.Therefore, by battery terminal the charging that lithium ion battery 12 carries out is cut off.
Though describe in detail and shown the present invention, should be understood that this just in order to describe and to demonstrate, is not to be used for limiting the present invention, the spirit and scope of the present invention are only limited by the scope of appended claims.

Claims (6)

1. battery apparatus comprises:
One lithium ion battery, it has by formed positive pole of polymeric material and negative pole, and utilizes lithium ion to charge and discharge;
One circuit board is installed on the outer surface of described lithium ion battery;
One first connector, it is connected between described circuit board and the described positive pole;
One second connector, it is connected between described circuit board and the described negative pole; And by one of them formed strap-like member at least of described first connector and described second connector, described strap-like member has preset width and extends and many partial cut-out of forming from the transverse end broad ways of this strap-like member.
2. battery apparatus as claimed in claim 1 is characterized in that, described many partial cut-out extend to from a described lateral edges cross central line that surpasses described strap-like member a bit.
3. battery apparatus as claimed in claim 1 or 2 is characterized in that, described many partial cut-out comprise from the transverse end of described strap-like member extends and first partial cut-out and second partial cut-out of formation along described Width.
4. battery apparatus as claimed in claim 3 is characterized in that, described first partial cut-out alternately forms with the length direction that described second partial cut-out is relative described strap-like member.
5. battery apparatus comprises:
One lithium ion battery, it has by formed positive pole of polymeric material and negative pole, and utilizes lithium ion to charge and discharge;
One circuit board is installed on the outer surface of described lithium ion battery;
One first connector, it is connected between described circuit board and the described positive pole;
One second connector, it is connected between described circuit board and the described negative pole; And
By one of them formed strap-like member at least of described first connector and described second connector, described strap-like member has the arch section of outwards giving prominence to and forming on its whole width.
6. battery apparatus as claimed in claim 5, it is characterized in that, in described first connector and described second connector one of them comprises a sweep at least, bending on it is by forming along the mode that the outer surface of described lithium ion battery extends in the corner of described outer surface, and described arch section just is formed on described bend office.
CNB988001888A 1997-02-26 1998-02-18 Battery device Expired - Fee Related CN100334773C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9041757A JPH10241736A (en) 1997-02-26 1997-02-26 Battery structure
JP41757/97 1997-02-26

Publications (2)

Publication Number Publication Date
CN1217825A CN1217825A (en) 1999-05-26
CN100334773C true CN100334773C (en) 2007-08-29

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Country Status (8)

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US (1) US6117576A (en)
EP (1) EP0928037B1 (en)
JP (1) JPH10241736A (en)
KR (1) KR100511375B1 (en)
CN (1) CN100334773C (en)
DE (1) DE69837782T2 (en)
TW (1) TW364665U (en)
WO (1) WO1998038689A1 (en)

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US6117576A (en) 2000-09-12
EP0928037A4 (en) 2004-10-13
JPH10241736A (en) 1998-09-11
WO1998038689A1 (en) 1998-09-03
DE69837782T2 (en) 2007-10-18
CN1217825A (en) 1999-05-26
TW364665U (en) 1999-07-11
EP0928037B1 (en) 2007-05-16
EP0928037A1 (en) 1999-07-07
DE69837782D1 (en) 2007-06-28
KR20000065007A (en) 2000-11-06

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